interrogative

/ˌɪntəˈrɒɡətɪv/

adjective

1.

asking or having the nature of a question

2.

denoting a form or construction used in asking a question

3.

denoting or belonging to a class of words, such as which and whom, that are determiners, adjectives, or pronouns and serve to question which individual referent or referents are intended Compare demonstrative, relative